I would like to know what is a idempotent matrix? Also, which invertible matrices are also idempotent and can a matrix be nilpotent and idempotent at the same time?
[Math] a idempotent matrix
linear algebramatrices
linear algebramatrices
I would like to know what is a idempotent matrix? Also, which invertible matrices are also idempotent and can a matrix be nilpotent and idempotent at the same time?
Best Answer
In algebra, an idempotent matrix is a matrix which, when multiplied by itself, yields itself. (guess where this is from...)
With the exception of the identity matrix, an idempotent matrix is singular...
Does the zero matrix count?